Best Healer for Multiboxers?

[Sam DeathWalker]

Well now I am looking at disc priest in mop, they have a holy nova spam (3percent base mana gcd only I think) which will heal and flush out rogues and are instant cast, and you dont have to be in raid or group to benifit (big plus kinda). Plus at level 90 vampirec dominance which heals 3 low health nearby for 15percnet of all other healing you do ...

Fear ward, and dispel magic (powerfull to defend stuns and whatnot)

Pryer of mending is also a nice shield, and power word barrier.

The nice thing with these single target spells is that the more priests you have the more targets you can protect, whereas with auras and whatnot you dont get more effect with more of the same class.

Right now I am thinking (going down to 26 box to save monies bleh)

1 prot pal tank
20 archane mages /archane barrige 40yards instant cast/ (maybe 15 and 5 warlocks if the guild travel perk is eliminated)
1 Restro Shaman (5 mastery to nice and I have one at level 80 already but maby note as cant caste heals while moving)
4 Disc Priest

Very mobil crew which can heal and attack while running.

1 DK back up alt.